381507993594 has 192 divisors, whose sum is σ = 1083820518144. Its totient is φ = 94116722688.

The previous prime is 381507993571. The next prime is 381507993619. The reversal of 381507993594 is 495399705183.

381507993594 is a `hidden beast` number, since 3 + 8 + 1 + 507 + 9 + 9 + 35 + 94 = 666.

It is a super-2 number, since 2×381507993594² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4496872 + ... + 4580924.

It is an arithmetic number, because the mean of its divisors is an integer number (5644898532).

Almost surely, 2^381507993594 is an apocalyptic number.

381507993594 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 381507993594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541910259072).

381507993594 is an abundant number, since it is smaller than the sum of its proper divisors (702312524550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381507993594 is a wasteful number, since it uses less digits than its factorization.

381507993594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84261 (or 84258 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 381507993594 in words is "three hundred eighty-one billion, five hundred seven million, nine hundred ninety-three thousand, five hundred ninety-four".